The silesian lizard, Silesaurus (2003)

Phylum : Chordata
Class : Reptilia
Order : Dinosauromiformes
Family : Silesauridae
Genus : Silesaurus
Species : S. opolensis

  • Late Triassic (230 Ma)
  • 2,3 m long and 12 kg
  • Poland

Silesaurus measured approximately 2.3 meters long (7.5 ft), and was facultatively bipedal. It was light and built for speed.

Silesaurus was an herbivore. The teeth were small, conical, and serrated. The tip of the dentary has no teeth, and some paleontologists think that it may have been covered by a beak.

Most scientists think that Silesaurus was not a dinosaur, but rather a dinosauriform. Dinosaurian features lacking in Silesaurus include an enlarged deltopectoral crest (a muscle attachment on the humerus), and epipophyses (enlarged tendon attachment above the postzygapophysis) on the cervical vertebrae.

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